package day05;
import java.util.Arrays;
import java.util.Random;
//数组的排序
public class ArraySort {
    public static void main(String[] args) {
        Random rand = new Random(); //随机数对象
        int[] arr = new int[10];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = rand.nextInt(100); //0到99的随机整数
            System.out.println(arr[i]);
        }

        Arrays.sort(arr);   //对arr数组做升序排列

        System.out.println("升序排序后:");
        for (int i = 0; i < arr.length; i++) {
            System.out.println(arr[i]);
        }

        System.out.println("降序排序后:");
        for (int i = arr.length - 1; i >= 0; i--) { //数据还是升序的, 只是倒着展示
            System.out.println(arr[i]);
        }
    }
}
